Line-insulator.



O. G. MEUSEBAGH.

LINE INSULATOR.

APPLICATION FILED DEC. 24, 1912.

Patented Nov. 11, 1913.

llllllliiiiiiiillillllll I5 26 25 Y 26 2? 1'9 22 2 0- --20 0 Y INVENTOR 0270 C. MEUSEBHCH;

ATTORNEYS A WITNESSES OTTO C. MEUSEBACH, OF SAN ANTONIO, TEXAS.

LINE-INSULATOR.

Specification of Letters Patent. Patented N 11 1913.

Application filed December 24, 1912.. Serial No. 738,427.

To all whom it may concern Be it known that I, OTTO C. MEUSEBACH, a.

citizen of the United States, and a resi-.

dent of San Antonio, in thecounty of Bexar and State of Texas, have invented certain new and useful Improvements in Line-Insulators, of which the following is a specification.

My invention relates to line insulators, my

more particular purpose being to provide an insulator suitable tor use upon telephone and telegraph lines, well as upon lines for general service of various kinds, a

special object being to improve the insulation of the line and at the same time to render the construction comparatively cheap, simple, and in many ways efiicient. Reference is made to the accompanying drawings'forming part of this specification andin which like letters indicate like parts.

Figure 1' is a fragmentary perspective showing a cross arm supported upon a post and equipped wlth one type of my improved insulators for the purpose of supporting a number of lines. Fig. 2 is a fragmentary longitudinalsectio-n through a part of the cross arm, on line 2-2 of Fig. 3, looking in the direction of the arrow; Fig. 3 isa vertical cross section through the cross arm, on the line 33 of Fig. 2, looking in the direction of the arrow; Fig. 4 is a perspective of one of the end blocks; Fig. 5 is a fragmentary perspective of the angle plate; Fig. 6 is a section on the line 6'6 of Fig. 2 looking in the direction of the arrow; and, Fig. 7 is a fragmentary section somewhat similar to Fig. 3 and showing a slightly different form of mounting for the insulator pin.

Mounted upon a post 9 is' a casing 10 made of sheet metal and having generally the form of a lengthy box or inverted trough, as indicated in Figs. 2 and 3. The casing 10 is supported upon the post 9 by aid of a fastening 11 and brace 12. A number of line wires are shown at 13 and maybe ordinary telephone or telegraph wires or lighting or power wires as desired. I

Mounted within each end of'the casing 10 is a block 14 made of dry wood or other appropriate material and held in position b a bolt 15. The block 14 is provided adj acentits upper end with a groove 16. An angle plate is shown at 17 and is provided with a number of holes'18. The angle plate is further provided with a pair of flanges 19 integral with it. The angle plate is so formed as to fit into the groove 16, this groove extending downwardly at its ends,'as will be understood from Fig. 4.

I A number of insulator pins 20 are provided for supporting the wires 13. Each insulator pin 20 is made of a metallic core 21 provided externally with enamel, the enamel coating Y being shown at 20 and constituting the visible portion of the pin. Each pin is provided with a shoulder 22 and with a threaded stem 23, these parts being of metal and integral with the core 21. Alnumber of sleeve-s 24 made of hard rubber fiber or similar insulating material are severally provided with annular flanges 25 and fitted into the holes 18. Each sleeve 24- 1s provided internally with a thread mating the thread of the stem 23. Each sleeve 24 thus is adapted to serve as a nut when turned relatively to the threaded stem 23 upon which it fits. A' gasket 26 is made of rubber or other appropriate insulating material and is of annular form. This gasket encircles the. threaded stem 23 and prevents engagement between the angle plate 27 and the shoulder 22, as will be understood'from Fig. 3.

Each insulator pin 20 carries an eye 27 and is provided with a slot 28 for facilitat ing the introduction of the wire into the eye 27. The slot 28 occupies a plane which crosses above the general length of the insulator pin and the general length of the wire where the latter extends through the eye 27. A tiewire is shown at 29 and is used for securing the wire 30 within the eye 27. A

' spacing block 30 is located within the casing the threaded stem 23, the sleeve 32 being grooved internally.

The operation of my device is as follows: The parts described being assembled and secured as indicated the -.wires 13 are supported upon the eyes 27 which are carried by the insulator pins 20. There is an air space between the casing 10 and the adjacent stem 23so that no leakage of current can take place from the insulator pins 20 to the ground, the pins being insulated from the angle late 17, the insulation of the latter from t 1e casing 10 becoming a matter of small consideration. Nevertheless, the blocks 14, and 31 serve the precautionary purpose of further preventing the chances for any of the current escaping to the ground. Not only are the insulator pins thus effectively insulated from the ground and from all conducting bodies connected with the ground, but they are effectively insulated from each other by virtue of their respective mountings relatively to the angle plate 17. Moreover, each insulator pin :20 being coated with enamel, as above indicated, is further insulated thereby. This coating of enamel covers the eye 27 both externally and internally as well as the entire core 21. In other words, the entire pin except the stem 23 is thickly coated with enamel. *Suchbeing the case, even if from any accident the insulatior rwithin the casing 10 should prove to be defective, the several wires 13 are nevertheless insulated each from the other and from the angle plate 17. y

In event of rain or snow the insulator pins are kept dry and out of contact with moisture. Should a driving rain happen to wet the eyes 27 this could not cause a ground to take place or otherwise render the insulation materially defective.

Instead of wires 13 Ima-y employ conductors of any kind suitable for overhead lines, my insulator being equally adapted for supporting wires, cables and such other-con ductors as are likely to be used for the purposes indicated.

I do not limit myself to the precise construction shown, as variations may be made therein without departing from the spirito-f my invention.

Having thus described my invention, what I claim and desire to secure by Letters Patent is, as follows 1. A device of the character described, comprising a box-like member open at its bottom and closed at its top, a metallic angle plate located within said box-like member and provided with a hole, an insulating member engaging said angle plate and extending through-said hole, and an insulating pin engaging said insulating member and provided with a stem secured to said insulating member.

2. A device of the character described, comprising a metallic box-like member open at its bottom, a metallic angle plate located Within said box-like member and provided with holes, an insulator pin provided With a shoulder disposed adjacent to said angle plate and further provided with a stem extending through one of said holes, an insulating member engaging said shoulder of said pin and also engaging the adjacent portion of said angle plate, and a sleeve of'insulating material encircling said stem and extending through the adjacent holes in said angle plate.

OTTO C. MEUSEBACH.

Witnesses:

GEORGE A. MEYER, FELIX STAFFEL. 

